Ammonites first appeared 400 million years ago and became extinct 65 m.y.a. along with the dinosaurs, The largest ammonite fossils can sometimes reach 2 metres in diameter, Fossilised ammonites were thought to be petrified snakes and were called serpent stones ,also ammonites were once a staple diet of megalodons as many ammonites have been found with megalodons teeth fossils embedded in the ammonites ,pyrite British ammonite fossils are found on Charmouth beach Dorset and also pyrite ammonites are found on Whitby beach north Yorkshire, ammonites.
This Perisphinctes ammonite fossil originates from Tulear in Madagascar.
Ammonite dates from the Upper Jurassic period and is approx. One hundred twelve million years old Ammonites first appearing in the fossil record 240 million years ago, descending from straight shelled cephalopods. The last lineages disappeared around 65 million years ago towards the end of the Cretaceous.
Asteroceras sp superb display fossil
from Frodingham Scunthorpe,
Jurassic lower lias ironstone fossil ammonite,
Size of ammonite 7 inches by 7.5inches
Approx 195 million years old best
British ammonites in the world
Ammonite with matrix 9 inches high
Jurassic, Lower Lias, Semicostatum Zone
Lyme Regis, Dorset, UK
A superb collectors ammonite fossil from the lower lias Dorset
Interior designers love these British ammonite fossils as they are a stunning display piece
Approximately 200 years old
size 10.5 inch across or 206.5 mm Diameter
approx. weight 3.8kg
Goniatites are not easy to identify they can easily be mistaken for Ammonites, Goniatites are in the Ammonoid family (Mollusc).
Goniatites evolved at the same time as the Nautilus, however, they were not deemed as successful as most Nautilus; most Goniatites were extinct by the Mississippian
350 TO 400 MYOGoniatites
SIZE 12 inch by 9 inch